Producing sheet glass



Nov. 5, 19129. N. FRANZE N PRODUCING SHEET GLASS Filed May 15, 1.925 2 Sheets-Sheet l HIS ATTORNEYS Nov. 5, 1.929. 1,734,250

PRODUCING SHEET GLASS 'Filed May 15,1925 2 Sheets-Sheet 2 Ill Patent Nov. 5;, 192

w ZEN, 0F LONG IBEACH,.CALH'ORNIA, ASSIGNOB, T0 ShISSIPIPI GLASS COMPANY, OF NEW YORK, N. Y.,

rnonocrne My present invention relates to method and 1 means for forming molten glass into sheet form and cutting it into given widths and transporting said severed sheets into proper receiving apparatus. It relates more particularly to method and means for severing long streams of molten glass transversely into sheets of a length substantially that of the width of said stream, and for handling said stream before and after such severing.

In the formation of molten glass into sheets ofnarrow width economy of s ace, time and apparatusis secured, I fin by first formingthe flowing stream of molten glass into a sheet of a width substantially equal to the length of the desired finished sheets and then severing the flowing sheet as it passes a from the forming means transversely into sheets of dimensions substantially those of the finished sheet,

For such severing I provide two rotative which with the said rolls form a substantially fiat-and even propellingsurface which keeps the yet soft sheets from warping as they are being transported.

Other aims andobjects of my invention will appear from the specification and the drawings in which latter, p

Fig. 1 is an elevation view 1n part section oif'the sheet severing means of my 1nvention,

Fig. 2 is an elevation view in part section or glass working mechanism and apparatus from melting furnace to annealing lehr and in which the severing means, forming devices, and transporting means of my invention are employed, and

flsented between them.

a CQRPOTJION can no tees. Isa-m no. auras.

Fig.31isa plan view of the mechanism of Fig. 2. 4 I v n the drawings the bob 1 carries about its circumference the teeth 2, 2, whose edges cooperate with the outward edges of the. ro-

tating knives 3, 3, to perform a shearing action on material of an oerable thickness prehe spindle or shaft 5 carries said hob and serves to impart to it a rotative motion and the upwardly entending fiangesdb, at each end of said hob serve to guide the sheet of lass a as it passes over the hob. The shaft% carries the knife 3 with its mounting member 8 and -serves to impart thereto a rotative motion cooperative with that of said bob 1. The distance between cuts: made by said es and hole is controllable by regulating the rate of rotation of said h ives and by the number of knives carried by member 8 or its equivalent. For-enample, in the device shown in the drawings when the ives are rotated at the same circumferential speed as said hob the distance between outset the width of the sheet formed will be substantially equal, to the circumferential distance between said ives at their cutting edges. The roll 9 rotated by shaft 10 serves to drive the sheet 4 toward the cutting mechanism and the refractory members 11 supported on the T members 12 serve to support said sheet during its travel. The re ractory members l3, 13, supported on the T members 14, 14, support the severed sheets as they are carried to the annealing lehr 15 or other device b the propulsion of the driven rolls 16, 16, w ich are rotated by shafts 17,

In the operation of the apparatu of my invention molten glass is fed from It, melt ing furnace 20 through the s out and passed between the forming rol s 21, 22, and from which in turn it p to the severing mechanism. As it passes between the members of said sever-in mechanism which are made to rotate on teir shaft at equal cir cumferential rates of w d, for example, and with the edges of the in ves yr chroni to perform shearing action wit cooperating edges of the hob teeth the sheet ii is cut into sheets 23 of comparatively narrow width and ly successively. engaging shearing members,

'of a len h equal to the width of said sheet 4. The oh and the knives after severing the sheets 23 move them over the refractory members 13 and onto the first oi the driven rolls 1 6 which transport them to the endless conveyor lehr 15 from which they are discharged into the receptacle'25.

I claim: 1. In combination with a glass melting furnace, means for forming sheet glass comprising forming rolls, and sheet severing means comprising cooperative sets of cylicaland sheet pro elling means comprising driven rolls with re ractory sheet supporting members intermediate them.

2. In glasssheet forming apparatus means for severing formed sheets into smaller sheets comprising cooperating sets of cyclically successively engaging shearing members, means {or propelling sheet lass between said cooperating members, and an 'al extensions on one of said members for gui 'ng said sheet glass thereover.

In testimony whereof I hereto aflix my signature.

NICKLAS FRANZEN. 

